Risk of psychosis from cannabis use lower than originally thought, say scientists

Previous research at York showed that regulating cannabis use could result in more effective strategies aimed at helping drug users to access the right support and guidance

University of York (UK)Thursday, April 20, 2017

Scientists at the University of York have shown that the risk of developing psychosis, such as hallucinations, from cannabis use is small compared to the number of total users. The research, published in the journal, Addiction, also showed for the first time that there is sufficient evidence to demonstrate that for patients who already have schizophrenia, cannabis makes their symptoms worse. In order to prevent just one case of psychosis, more than 20,000 people would have to stop using cannabis, as shown by a previous study led by the University of Bristol.

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In 2011 the 1961 UN Single Convention on drugs will be in place for 50 years. In 2012 the international drug control system will exist 100 years since the International Opium Convention was signed in 1912 in The Hague. Does it still serve its purpose or is a reform of the UN Drug Conventions needed? This site provides critical background.